Question

A long solenoid carries a current in the direction indicated in
the figure.
This current varies as
I(t) = Io(1-e^(-αt))
where Io = 30 A and α = 1.6 s^-1. Inside the solenoid, and coaxial
with it, is a wire loop.
The permeability of free space is 1.25664 × 10^-6 N/A^2.

1)What is the magnitude of the
maximum E induced in volts in the loop by the changing current?

Answer in units of V.

2)What is the magnitude of the E induced in the loop by the
changing current at t1 = 0.8 s?